| timestamp | status |
|---|---|
| 2025-07-09 19:08:07 | GEMS Start |
| 2025-07-09 19:08:07 | GEMS Starting |
| 2025-07-11 04:29:46 | Turbo Error Shutdown |
| 2025-07-11 04:29:47 | Turbo Error Shutdown |
| 2025-07-11 04:29:48 | Turbo Error Shutdown |
| 2025-07-11 04:29:49 | Turbo Error Shutdown |
| 2025-07-11 04:29:49 | Turbo Error Shutdown |
| 2025-07-11 04:29:50 | Turbo Error Shutdown |
| 2025-07-11 04:29:51 | GEMS Stop |
| 2025-07-11 04:29:53 | RGA Filament Off |
| 2025-07-11 04:29:53 | GEMS shutdown complete |
| 2025-07-11 04:29:55 | GEMS Starting |
| 2025-07-11 11:19:14 | GEMS started |
| 2025-07-11 11:19:14 | RGA Starting filament |
| 2025-07-11 11:20:09 | Turbo at speed |
| 2025-07-11 16:09:08 | Turbo Error Shutdown |
| 2025-07-11 16:09:09 | Turbo Error Shutdown |
| 2025-07-11 16:09:10 | Turbo Error Shutdown |
| 2025-07-11 16:09:11 | Turbo Error Shutdown |
| 2025-07-11 16:09:12 | Turbo Error Shutdown |
| 2025-07-11 16:09:13 | Turbo Error Shutdown |
| 2025-07-11 16:09:14 | Turbo Error Shutdown |
| 2025-07-11 16:09:14 | GEMS Stop |
| 2025-07-11 16:09:16 | RGA Filament Off |
| 2025-07-11 16:09:16 | GEMS shutdown complete |
| 2025-07-11 16:09:20 | GEMS Starting |
GEMS Telemetry
Get and parse data sent to GEMS website. Data from 2025-07-06 to present.
Get Data
Get data from website.
Use start_date parameter to limit download.
Add row, type, send and line number
Separate data into post times, met, status, and adv data
reshape rga data
Filter bad data before timestamping adv data
Calculate per-send means
Status
Last post was 2025-07-13 11:30:00
GEMS Status changes
last RGA reading was at 2025-07-13 11:29:47.375
Last ADV reading was at 2025-07-13 11:29:50.25
[1] "No incorrect lander timestamps!"Teensy Temp
Junction temp of Surface teensy. Runs at 50C at room temp. >95C kills teensies.
Battery
`geom_smooth()` using method = 'loess' and formula = 'y ~ x'
`geom_smooth()` using method = 'loess' and formula = 'y ~ x'Turbo
`geom_smooth()` using method = 'loess' and formula = 'y ~ x'
`geom_smooth()` using method = 'loess' and formula = 'y ~ x'RGA
Scale for y is already present.
Adding another scale for y, which will replace the existing scale.Oxygen
Carbon dioxide
Methane
Hydrogen sulphide
ADV
Pressure/Depth
ADV Correlation
ADV Amplitude
ADV Vertical Velocity
ADV Alongshore Velocity
ADV set up with x axis parallel to shore. Positive is North.
ADV Onshore velocity
Positive is offshore
IMU data
`geom_smooth()` using method = 'loess' and formula = 'y ~ x'
`geom_smooth()` using method = 'loess' and formula = 'y ~ x'
`geom_smooth()` using method = 'loess' and formula = 'y ~ x'Data issues
Bad Packets
Garbled status or data packets. These need to be filtered out before timestamping. These should be caught on the lander by adding a checksum. Also need to check whether data is corrupted from ADV-lander, lander-surface, or surface-web.
Out of order packets
Not sure what causes this. Happening on the server side. Maybe parallel processing of POST requests? Handled by sorting each send by packet number.
Missing data
Missing data includes bad packets. Need to separate out.
Joining with `by = join_by(send)`
`summarise()` has grouped output by 'send'. You can override using the
`.groups` argument.Average fraction missing per send in raw data 0.0637866
Average fraction of missing or bad data per send 0.0041325
Post times
| timestamp | send | row_count |
|---|---|---|
| 2025-07-13 08:20:00 | 778 | 500 |
| 2025-07-13 08:30:25 | 779 | 500 |
| 2025-07-13 08:40:00 | 780 | 500 |
| 2025-07-13 08:50:26 | 781 | 500 |
| 2025-07-13 09:00:25 | 782 | 500 |
| 2025-07-13 09:10:25 | 783 | 500 |
| 2025-07-13 09:20:00 | 784 | 500 |
| 2025-07-13 09:30:25 | 785 | 500 |
| 2025-07-13 09:40:25 | 786 | 500 |
| 2025-07-13 09:50:25 | 787 | 500 |
| 2025-07-13 10:00:25 | 788 | 500 |
| 2025-07-13 10:10:24 | 789 | 500 |
| 2025-07-13 10:20:25 | 790 | 500 |
| 2025-07-13 10:30:25 | 791 | 500 |
| 2025-07-13 10:40:25 | 792 | 500 |
| 2025-07-13 10:50:00 | 793 | 500 |
| 2025-07-13 11:00:24 | 794 | 500 |
| 2025-07-13 11:10:00 | 795 | 500 |
| 2025-07-13 11:20:25 | 796 | 500 |
| 2025-07-13 11:30:00 | 797 | 500 |